How to stop spamming once and for all.

First, those who ask us for our email will also display a "permission" field. The content for the permission field is generated automatically by a browser program that also stores it locally. When email is received, any sender who is not already on the approved list of senders, will have to provide the permission field. If a match is found, the email is displayed. If no match is found then the email gets sent to a spammer collecting server for possible punitive action. Whether to implement the checking process is, of course, optionally implemented on the email client.

No action is required on our part and no spam gets by.